/*!	 canvasremove.cpp
**	 Template File
**
**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**
**	This package is free software; you can redistribute it and/or
**	modify it under the terms of the GNU General Public License as
**	published by the Free Software Foundation; either version 2 of
**	the License, or (at your option) any later version.
**
**	This package is distributed in the hope that it will be useful,
**	but WITHOUT ANY WARRANTY; without even the implied warranty of
**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
**	General Public License for more details.
**
*/

#ifdef USING_PCH
#	include "pch.h"
#else
#ifdef HAVE_CONFIG_H
#	include <config.h>
#endif

#include <synfig/general.h>

#include "canvasremove.h"
#include <synfigapp/canvasinterface.h>

#include <synfigapp/localization.h>

#endif

using namespace std;
using namespace etl;
using namespace synfig;
using namespace synfigapp;
using namespace Action;

ACTION_INIT(Action::CanvasRemove);
ACTION_SET_NAME(Action::CanvasRemove, "CanvasRemove");
ACTION_SET_LOCAL_NAME(Action::CanvasRemove, N_("Remove Canvas"));
ACTION_SET_TASK(Action::CanvasRemove, "remove");
ACTION_SET_CATEGORY(Action::CanvasRemove, Action::CATEGORY_CANVAS);
ACTION_SET_PRIORITY(Action::CanvasRemove, 0);
ACTION_SET_VERSION(Action::CanvasRemove, "0.0");
ACTION_SET_CVS_ID(Action::CanvasRemove, "$Id$");

Action::CanvasRemove::CanvasRemove()
{
}

Action::ParamVocab
Action::CanvasRemove::get_param_vocab()
{
    ParamVocab ret(Action::CanvasSpecific::get_param_vocab());

    return ret;
}

bool
Action::CanvasRemove::is_candidate(const ParamList &x)
{
    if (candidate_check(get_param_vocab(), x)) {
        Canvas::Handle canvas = x.find("canvas")->second.get_canvas();
        assert(canvas);

        // We cannot remove the root canvas.
        if (canvas->is_root()) {
            return false;
        }

        return true;
    }

    return false;
}

bool
Action::CanvasRemove::set_param(const synfig::String& name, const Action::Param &param)
{
    return Action::CanvasSpecific::set_param(name, param);
}

bool
Action::CanvasRemove::is_ready()const
{
    return Action::CanvasSpecific::is_ready();
}

void
Action::CanvasRemove::perform()
{
    // We cannot remove the root canvas.
    if (get_canvas()->is_root()) {
        throw Error(_("You cannot remove the root canvas!"));
    }

    if (get_canvas()->is_inline()) {
        throw Error(_("You cannot remove an canvas from a Group!"));
    }

    parent_canvas = get_canvas()->parent();
    canvas_id = get_canvas()->get_id();

    assert(parent_canvas);

    parent_canvas->remove_child_canvas(get_canvas());

    if (get_canvas_interface()) {
        get_canvas_interface()->signal_canvas_removed()(get_canvas());
    } else {
        synfig::warning("CanvasInterface not set on action");
    }
}

void
Action::CanvasRemove::undo()
{
    parent_canvas->add_child_canvas(get_canvas(), canvas_id);

    if (get_canvas_interface()) {
        get_canvas_interface()->signal_canvas_added()(get_canvas());
    } else {
        synfig::warning("CanvasInterface not set on action");
    }
}